The 24-year-old showed her ex and co-star Jamie Campbell-Bower what he'll be missing in a slashed white Cushnie et Ochs dress, revealing a diagonal slit between her boobs and about three quarters of her abdominal area.

Such a tease!

We love the dress, her slicked back hair, and those perfect crimson lips, but we're not crazy about the white Giuseppe Zanotti pumps.

What's up with so many celebs rocking the white pumps lately? Is it because they know they won't be able to wear them after Labor Day???

But now, the younger sister of Louis, Félicité Deakin (pictured above, left, with Louis), has figured out her own way to pay tribute to her mother in a very special manner, and we are SO touched by it.

On Friday, the 16-year-old Deakin shared the following image (below), a gorgeous portrait of the family with her late mother, Johannah Deakin, surrounded by all of her children: